"Nā Kanaka Paʻakikī" ma Rare Metals

I loko o ka ʻohana metala kakaʻikahi, nui nā lālā me nā "ʻano paʻakikī".ʻAʻole wale lākou he mau wahi hoʻoheheʻe kiʻekiʻe, akā he kūpaʻa ikaika hoʻi i ka corrosion a ʻaʻole maʻalahi ka oxidized i ka lewa, no laila ua kapa ʻia lākou he "kanaka paʻakikī" i nā metala.

Ka helu hehee otungstenʻO ke kiʻekiʻe e like me 3410 ° C, ʻo ia ka mea kiʻekiʻe loa o nā metala āpau, no laila hiki ke hoʻohana ʻia i mea filament.ʻO ka pale ʻana i nā mahana kiʻekiʻe o 2000 ° C kahi ʻāpana keke no ka tungsten.Hoʻohana nui ʻia ka tungsten metala i ka carbide cemented, ke kila kūikawā a me nā huahana ʻē aʻe, a hoʻohana nui ʻia i ka ʻoihana pale, aerospace, ʻoihana ʻike, a hāʻawi kekahi poʻe iā ia i ke poʻo inoa o "ka niho o ka ʻoihana".

ʻO ka lua hoʻoheheʻe ʻia ka rhenium metala, ʻo ia ka 3180 ℃.He mea pono ke ʻōlelo ʻia ʻo ka rhenium he mea laha loa.ʻO kona ʻike i loko o ka ʻāʻī o ka honua he kakaikahi a hoʻopuehu, ʻoi aku ka kiʻekiʻe ma mua o nā protactinium a me radium.No laila, ʻo ia ka mea hope loa i loaʻa i ke ʻano.Ma muli o ka ʻike ʻana o Mendeleev i ke kānāwai manawaleʻa o nā mea, ʻaʻole i loaʻa i nā ʻepekema ʻo ia no ka hapalua haneli a hiki i ka ʻike ʻia ʻana e nā chemists Kelemania i ka makahiki 1925.

ʻO ke kolu o ka helu heheʻe ʻo ka osmium metala, ʻo ia ka 3045 ℃.Ma ka manawa like, ʻo ia hoʻi ka metala kaumaha loa ma ke ʻano, me ka nui o ka 22.4 g / cm3.Aia ma kahi ʻehā ka tantalum metala, nona ka helu heheʻe o 2996°C.

ʻO nā metala me kahi helu hoʻoheheʻe ma luna o 2000 ° C, a me ka molybdenum, hafnium, etc.Molybdenumhe mea pono no ke kanaka, holoholona a me na mea kanu.ʻO ka nui o ka molybdenum i loko o ke kino o ke kanaka makua he 9 mg, me ka mea kiʻekiʻe loa i loko o ke ake a me nā puʻupaʻa.Hiki i nā mea kanu ke hoʻoponopono i ka nitrogen ma lalo o ka hana o ka molybdenum a hoʻololi i ka nitrogen i kahi ʻano e hiki ke hoʻopili ʻia.Hoʻohana nui ʻia ka Molybdenum no ka hoʻomaʻemaʻe ʻana i nā ʻano kila kila, nā kila kila, nā kila wela a me nā mea hoʻohui super.Hoʻohana nui ʻia ia i ka ʻoihana koa a ʻike ʻia ʻo ia ʻo "war metal".Ka helu hehee o ka metalahafniumhe 2233°C.Pono e ʻōlelo ʻia ʻo ka huila hafnium, Ta4fC5, ʻo ia ka mea me ka helu heheʻe kiʻekiʻe loa, ma kahi o 4215°C.

ʻO Chengdu Huarui Industrial Co., Ltd. 

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